gui

The graphical user interface (GUI) evolved over time based on the requirements of Swarm users. The semantics are very similar to Tcl/Tk, but with an object-oriented API. We still use some of the gui features in Java Swarm models because the interface is less complex than AWT/Swing (e.g. gui is not multithreaded), because complete AWT/Swing implementations are not freely redistributable, and because it is fairly fast.